About Java Variable naming conventions

A summary of the variable definitions for Java is as follows, with only alphanumeric and dollar signs and underscores

1, the first text is written in English letters (A-Z-a-to-a--), or $, or underscore _ start

2, the second letter can be used after the text

3. Strict case Difference

4, no limit on length

5, can not use the reservation language (If,goto, etc.)

 Public classTest1 { Public Static voidMain (string[] args) {intA=1; int_23; int $; int#;//can't start with him .        int34;//cannot start with a number        int Goto;//cannot use the reservation language        int if;//Ibid .        inta#$%;//cannot appear # and%        inta87$; inta_$if; }}

About Java Variable naming conventions